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5. mbm
mom behind me. Used in AIM to tell the perosn your mom or some one else is behind you and to keep converstion clean.
Bill: Lets smoke that weed on Saturday

Bob: MBM

Bill: wat you doin this weekend?
by Ryan Mar 11, 2005 add a video
1. mbm
Married Black Male, Married African-American Male. same as mwm but black. usually found in classifieds, etc
MBM looking for a MBW for a discrete hook-up.
2. MBM
Mass Bowel Movement, when 5 people or more gang up and go take a crap in the same toilet so as to plug it up
-What's that smell?
-The janitors had an MBM because they wanted higher pay
-oh
3. MBM
Mildy Bellied Male- A phrase coined by Patrick Roberge, it's the response to "BBW", where the man is not fat or significantly overweight, but does still have a belly.
"I'm not fat, I'm a MBM!"
4. MBM
Made By Man
That movie was so MBM.
6. mbm
marshall bruce mathers.
i love you mbm.
by gianna May 18, 2004 add a video
7. MBM
Motor Boat Material, Any woman with large breast that you can put your face in between and motor boat
yo, shorty over there got some nice MBM's.

Look at the MBM running this way.
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